Kazuma Yonenaga

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Forty patients with complete atrioventricular canal (CAVC) underwent primary repair at Fukuoka Children's Hospital in Fukuoka, Japan, between August 1, 1981 and July 31, 1989. The age at repair ranged from 2 months to 6 years (mean 19 months); weight ranged from 2.3 to 22 kg. The surgical mortality was 2.5%. Justification for early primary repair was(More)
BACKGROUND AND PURPOSE We assigned a threshold to arterial spin-labeling (ASL) perfusion-weighted images (PWI) from patients with acute ischemic stroke and compared them with dynamic susceptibility contrast perfusion images to examine whether mismatch can be determined. METHODS Pseudocontinuous ASL was combined with dynamic susceptibility contrast PWI in(More)
Pulmonary vascular disease was morphometrically analyzed in 67 patients (mean age, 19 months) with isolated complete atrioventricular canal defect. Complete obstruction of the small pulmonary arterial lumen resulting from acute fibrous proliferation and atrophy of the peripheral arterial media, which were considered absolute operative contraindications,(More)
Retrograde coronary sinus perfusion of cold cardioplegic solution was evaluated in infants undergoing an arterial switch operation for transposition of the great arteries. To assess myocardial injury during ischemia, hemodynamic measurements were conducted at weaning from cardiopulmonary bypass and a postoperative assay of creatine kinase isoenzyme MB was(More)
Two infants, aged 36 days old (Case 1) and 18 days old (Case 2) with interrupted aortic arch types B and A, respectively, and with severe aortic stenosis, were successfully operated on by use of pulsatile cardiopulmonary bypass. The great arteries were normally related in Case 1 and were transposed in Case 2. Repair involved the following procedure:(More)
Between June 1984 and September 1987, 48 patients underwent Lecompte's modification of the arterial switch operation for transposition of the great arteries, including transposition with intact ventricular septum with preparatory pulmonary artery banding (n = 18), with patent ductus arteriosus (n = 11), with dynamic left ventricular outflow tract(More)
From January 1981 to December 1990, intracardiac repair of tetralogy of Fallot in 148 pediatric patients, with one surgical death, was directed toward preservation of the native pulmonary valve. Using the accepted preoperative angiographic criterion for the pulmonary valve annulus area (PVA) of 1.8 cm2/m2, 85 patients were candidates for transannular right(More)
Myocardial distribution of the retrograde flow through the coronary sinus in the canine heart was evaluated by observing the corrosion casts of the myocardial vessels after coronary sinus injection of a low-viscosity resin, Mercox, a compound that passes through capillaries. The apex and the left ventricular free wall were well perfused at the microvascular(More)
Pulsatile high-flow cardiopulmonary bypass (2.5 l/m2/min with a rectal temperature of 28 degrees C) combined with the Pulsatile Bypass Pump (Kontron Instrument) has been used at Fukuoka Children's Hospital in 259 cases of open-heart surgery in patients less than 1 year of age for a period of 5 years beginning July 1982. The overall results were satisfactory(More)